摘要
为研究西南某铅锌矿区土壤重金属污染的状况,采集采矿区和尾矿区的土壤,对土壤中重金属(Zn、Pb、Cd、Cr、Cu)的水溶态、弱酸提取态和总含量进行了分析,并采用单因子污染指数法和内梅罗综合污染指数法进行了现状评价。研究得出该铅锌矿区土壤存在较为严重的重金属复合污染,重金属生物有效性和迁移能力较强,对当地生态及地下水、地表水存在严重的风险。研究成果可为铅锌矿区土壤重金属污染的监测和治理提供一定的科学依据。
In order to study the heavy metals pollution of a lead-zinc mining soils in southwest China,the samples of mining soils and mine tailings soils were collected and tested.The water-soluble state,weak acid state and total content of heavy metals zinc,lead,cadmium,chromium and copper were analyzed.The pollution status was evaluated by single factor pollution index method and Nemerow comprehensive pollution index method.The result showed that the soils in lead-zinc mining areas in the study were seriously polluted with the strong bio-availability and migration ability of heavy metals,and serious risks to local ecology,groundwater and surface water.The findings of this work can provide some scientific basis for monitoring and controlling heavy metals pollution of soils in lead-zinc mining area.
作者
徐伟健
宋旭燕
龚正君
王东梅
XU Wei-jian;SONG Xu-yan;GONG Zheng-jun;WANG Dong-mei(Faculty of Geosciences & Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;College of Environmental & Resource Sciences of Zhejiang University,Hangzhou 310058,China;Powerchina Chengdu Engineering Corporation Limited,Chengdu 610072,China)
出处
《四川环境》
2019年第5期49-54,共6页
Sichuan Environment
基金
四川省科技厅重点研发项目(2018GZ0400)
国家自然科学基金(21777131)
关键词
铅锌矿区
土壤
重金属污染
评价
Lead-zinc mining area
soil
heavy metals pollution
assessment
